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Diffstat (limited to 'scripts/makepkg-template.pl.in')
| -rwxr-xr-x | scripts/makepkg-template.pl.in | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/scripts/makepkg-template.pl.in b/scripts/makepkg-template.pl.in new file mode 100755 index 00000000..567514e1 --- /dev/null +++ b/scripts/makepkg-template.pl.in @@ -0,0 +1,212 @@ +#!/usr/bin/perl +# makepkg-template - template system for makepkg +# @configure_input@ +# +# Copyright (c) 2013 Pacman Development Team <pacman-dev@archlinux.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# +use warnings; +use strict; +use v5.10.1; +use Cwd qw(abs_path); +use Getopt::Long; +use Module::Load; +use Module::Load::Conditional qw(can_load); + +my %opts = ( + input => '@BUILDSCRIPT@', + template_dir => '@TEMPLATE_DIR@', +); + +my $template_name_charset = qr/[[:alnum:]+_.@-]/; +my $template_marker = qr/# template/; + +# runtime loading to avoid dependency on cpan since this is the only non-core module +my $loaded_gettext = can_load(modules => {'Locale::gettext' => undef}); +if ($loaded_gettext) { + Locale::gettext::bindtextdomain("pacman-scripts", '@localedir@'); + Locale::gettext::textdomain("pacman-scripts"); +} + +sub gettext { + my ($string) = @_; + + if ($loaded_gettext) { + return Locale::gettext::gettext($string); + } else { + return $string; + } +} + +sub burp { + my ($file_name, @lines) = @_; + open (my $fh, ">", $file_name) || die sprintf(gettext("can't create '%s': %s"), $file_name, $!); + print $fh @lines; + close $fh; +} + +# read a template marker line and parse values into a hash +# format is "# template (start|input); key=value; key2=value2; ..." +sub parse_template_line { + my ($line, $filename, $linenumber) = @_; + my %values; + + my ($marker, @elements) = split(/;\s?/, $line); + + ($values{command}) = ($marker =~ /$template_marker (.*)/); + + foreach my $element (@elements) { + my ($key, $val) = ($element =~ /^([a-z0-9]+)=(.*)$/); + unless ($key and $val) { + die gettext("invalid key/value pair\n%s:%s: %s"), + "$filename:$linenumber: $line"; + } + $values{$key} = $val; + } + + # end doesn't take arguments + if ($values{command} ne "end") { + if (!$values{name}) { + die gettext("invalid template line: can't find template name\n"), + "$filename:$linenumber: $line"; + } + + unless ($values{name} =~ /^$template_name_charset+$/) { + die sprintf(gettext("invalid chars used in name '%s'. allowed: [:alnum:]+_.\@-\n"), $values{name}), + "$filename:$linenumber: $line"; + } + } + + return \%values; +} + +# load a template, process possibly existing markers (nested templates) +sub load_template { + my ($values) = @_; + + my $ret = ""; + + my $path; + if (!$opts{newest} and $values->{version}) { + $path = "$opts{template_dir}/$values->{name}-$values->{version}.template"; + } else { + $path = "$opts{template_dir}/$values->{name}.template"; + } + + # resolve symlink(s) and use the real file's name for version detection + my ($version) = (abs_path($path) =~ /-([0-9.]+)[.]template$/); + + if (!$version) { + die sprintf(gettext("Couldn't detect version for template '%s'"), $values->{name}); + } + + my $parsed = process_file($path); + + $ret .= "# template start; name=$values->{name}; version=$version;\n"; + $ret .= $parsed; + $ret .= "# template end;\n"; + return $ret; +} + +# process input file and load templates for all markers found +sub process_file { + my ($filename) = @_; + + my $ret = ""; + my $nesting_level = 0; + my $linenumber = 0; + + open (my $fh, "<", $filename) or die sprintf(gettext("failed to open '%s': %s"), $filename, $!); + my @lines = <$fh>; + close $fh; + + foreach my $line (@lines) { + $linenumber++; + + if ($line =~ $template_marker) { + my $values = parse_template_line($line, $filename, $linenumber); + + if ($values->{command} eq "start" or $values->{command} eq "input") { + if ($nesting_level == 0) { + $ret .= load_template($values); + } + } elsif ($values->{command} eq "end") { + # nothing to do here, just for completeness + } else { + die sprintf(gettext("Unknown template marker '%s'\n"), $values->{command}), + "$filename:$linenumber: $line"; + } + + $nesting_level++ if $values->{command} eq "start"; + $nesting_level-- if $values->{command} eq "end"; + + # marker lines should never be added + next; + } + + # we replace code inside blocks with the template + # so we ignore the content of the block + next if $nesting_level > 0; + + $ret .= $line; + } + return $ret; +} + +sub usage { + my ($exitstatus) = @_; + print gettext("makepkg-template [options]\n"); + print "\n"; + print gettext("Options:\n"); + printf(gettext(" --input, -p <file> Build script to read (default: %s)\n"), '@BUILDSCRIPT@'); + print gettext(" --output, -o <file> file to output to (default: input file)\n"); + print gettext(" --newest, -n update templates to newest version\n"); + print gettext(" (default: use version specified in the template markers)\n"); + print gettext(" --template-dir <dir> directory to search for templates\n"); + printf(gettext(" (default: %s)\n"), '@TEMPLATE_DIR@'); + print gettext(" --help, -h This help message\n"); + print gettext(" --version Version information\n"); + print "\n"; + exit($exitstatus); +} + +sub version { + my ($exitstatus) = @_; + printf "makepkg-template (pacman) %s\n", '@PACKAGE_VERSION@'; + print gettext( + 'Copyright (c) 2013 Pacman Development Team <pacman-dev@archlinux.org>.'."\n". + 'This is free software; see the source for copying conditions.'."\n". + 'There is NO WARRANTY, to the extent permitted by law.'."\n"); + exit($exitstatus); +} + +Getopt::Long::Configure ("bundling"); +GetOptions( + "help|h" => sub {usage(0); }, + "version" => sub {version(0); }, + "input|p=s" => \$opts{input}, + "output|o=s" => \$opts{output}, + "newest|n" => \$opts{newest}, + "template-dir=s" => \$opts{template_dir}, +) or usage(1); + +$opts{output} = $opts{input} unless $opts{output}; + +$opts{input} = "/dev/stdin" if $opts{input} eq "-"; +$opts{output} = "/dev/stdout" if $opts{output} eq "-"; + +burp($opts{output}, process_file($opts{input})); + +# vim: set noet: |